Welcome to xAI Documentation

Build with Grok, the AI model designed to deliver truthful, insightful answers.

Get started

API & SDK

Learn how to integrate Grok into your applications.

Console

Learn about billing, API keys, and account settings.

Grok App

Learn how to use Grok on web and mobile.

Grok 4.20

Grok 4.20 is our newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.

Modalities

Context window

2,000,000

Features

Function calling

Structured outputs

Reasoning

Lightning fast

Quick start with the API

Quickstart

Create an API Key and make your first request.

Tools

Let Grok search, execute code, and call functions.

Images

Use Grok to analyze images or perform OCR.